Table 2.
Demographic and residential characteristics of the study population (n=100).
| Characteristic | Number/percenta |
|---|---|
| Study center | |
| Detroit | 27 |
| Iowa | 28 |
| LA | 20 |
| Seattle | 25 |
| Case | 60 |
| Male | 55 |
| White | 92 |
| Smoking status | |
| Never | 19 |
| Former | 17 |
| Current | 9 |
| Not ascertained | 55 |
| Single family home | 74 |
| Number of homes ≤ 5 km of PCDD/F facilities: | |
| Medical waste incinerators | 43 |
| Coal-fired power plants | 31 |
| Sewage sludge incinerators | 28 |
| Municipal solid waste incinerators | 16 |
| Non-hazardous waste cement kilns | 15 |
| Hazardous waste incinerators | 11 |
| >1 Facility Type | 48 |
| Median (IQR) | |
| Census block population density (ppsm)b | 5154 (2393, 7296) |
| Year residence built | 1956 (1945 (1970) |
| Distance to freight route (meters)c | 393 (203, 693) |
| Distance to major road (meters)c | 1000 (418, 1000) |
a
The numbers add up to 100; therefore number=percent.
b
2000 U.S. Census of Population and Housing; ppsm=persons per square mile
c
Residences > 1000 m from a freight route or major road were assigned a distance of 1000 m.